Airlines enacted flexible rebooking policies for travelers scheduled to fly to San Francisco, where thousands of passengers have had their flights disrupted since the Saturday afternoon crash landing.

All flights were grounded for several hours after the Saturday crash, and schedules never caught back as two of the airport's four runways remained offline.

As of 3:55 p.m. ET on Sunday, SFO airport said in a tweet that there was "some good news" for fliers with the reopening of the airport's 28R runway. "This will increase our arrival rate to 30 or more aircraft per hour. ... This will help arrivals and departures and decrease wait times," the airport added via Twitter.

That will be welcome news for the thousands of fliers whose San Francisco flights have been canceled since Saturday. Other passengers found themselves at unexpected destinations as dozens of other flights bound for San Francisco International were diverted to other cities, including Seattle and San Jose, Calif.

The airport said customers with flights from SFO should contact their airlines for more information on the status of their flights.

By late Saturday, all major airlines had announced they would allow most customers ticketed to fly to, from or through San Francisco to change their flights at no cost. That included the two airlines that have hubs at SFO - United Airlines and Virgin America.

Still, customers whose flights were canceled or diverted faced the challenge of finding options to get to their destinations. With planes flying at near-record capacity, that can be a challenge even during normal conditions.